This exercise is painted with only two colors: French ultramarine and burnt sienna. It is not possible to successfully replace these colors with any others, possibly the brown color can be changed to a burnt umbra or other dark orange brown.
Much of the painting is done wet on wet, it is an excellent exercise for controlled transitions in wet in wet technique. You should take advantage of the fact that a wet surface spreads the paint heavily, while a drier surface only causes a small spread. When you have soaked some of the paper, it is advisable to start with colors that will flow out a lot, wait until the paper is drier for colors that will only spread a little.
The first thing you paint is the background with clean water, or with only a little color. You can paint over the teapot handle. Before the paint is dry, paint a few shadows on the cloth, it is important that the wet paper is really wet so that you have plenty of time to make the shadows.
Do not be shy, the shadows are quite dark, especially the one from the teapot. Feel free to paint a few creases and irregularities in the tablecloth with a lighter shade color.
Let the paint dry and then paint the teapot with a blue-gray paint mixture. Avoid painting on the brightest highlights in the teapot, they must remain unpainted white.
Paint the inside of the cup with clean water and then apply a moderately dark shadow color. Be sure to leave a narrow white (unpainted) border around the top of the cup.
When the paint is dry, repeat the same technique on the outside of the cup and handle. The shadows on the outside and inside of the cup are opposite each other. The outside has a shadow on the left side while the inside is darker on the right
Paint the teaspoon, look at the photo, it is important when painting metal that the pattern that is in the surface is correctly reproduced. You can not just guess, look at the photo and try to create a similar pattern as the photo shows.
You should also paint the handle of the teapot. The reason for doing this already now, and not at the same time as the teapot itself, is to create an edge between the handle and the teapot. If you were to paint them at the same time, no edge would appear.
Save a highlight in the handle so it looks shiny.
The teapot should be painted with dark, and with even darker color wet in wet. The blue-gray base painting of the teapot, which you painted in step 1, should be the white cup’s reflex. It should also be some less bright highlights in the teapot here and there.
Mix blue and brown to a very dark brownish black. Even a blue-black can be good to have for the darkest parts of the teapot.
Plan carefully: where is the lightest and darkest, where should you start painting, what details should be saved. You should have this clear to you before putting the brush on the paper. Once you have started painting, the whole teapot must be painted in one go, you have no time for reflection or mixing new paint, everything must be painted wet on wet, and it requires a little speed.
Also paint the blue-gray color on the handle of the cup and along the top as well as the pattern on the tablecloth. Do not forget to make a highlight in the handle.